<template>
	<div>
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/Home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>商品分类</el-breadcrumb-item>
		</el-breadcrumb>
		<el-card>
			<el-row>
				<el-col
					><el-button type="primary" @click="showAddCateDiaLog"
						>添加分类</el-button
					></el-col
				>
			</el-row>
			<tree-table
				:data="cateList"
				:columns="columns"
				:selection-type="false"
				:expand-type="false"
				show-index
				index-text="#"
				border
				stripe
				class="treeTable"
			>
				<!-- 是否有效 -->
				<template slot="isOk" slot-scope="scope">
					<i
						class="el-icon-success"
						v-if="scope.row.cat_deleted == false"
						style="color: green"
					></i>
					<i class="el-icon-error" v-else style="color: red"></i>
				</template>
				<!-- 排序 -->
				<template slot="order" slot-scope="scope">
					<el-tag size="mini" v-if="scope.row.cat_level == 0">一级</el-tag>
					<el-tag
						type="success"
						size="mini"
						v-else-if="scope.row.cat_level == 1"
						>二级</el-tag
					>
					<el-tag type="warning" size="mini" v-else>三级</el-tag>
				</template>
				<!-- 操作 -->
				<template slot-scope="scope" slot="opt">
					<el-button
						type="primary"
						icon="el-icon-edit"
						size="mini"
						@click="showClassification(scope.row.cat_id)"
						>编辑</el-button
					>
					<el-button
						type="danger"
						icon="el-icon-delete"
						size="mini"
						@click="removeCateById(scope.row.cat_id)"
						>删除</el-button
					>
				</template>
			</tree-table>
			<el-pagination
				@size-change="handleSizeChange"
				@current-change="handleCurrentChange"
				:current-page="queryInfo.pagenum"
				:page-sizes="[3, 5, 10, 15]"
				:page-size="queryInfo.pagesize"
				layout="total, sizes, prev, pager, next, jumper"
				:total="total"
			>
			</el-pagination>
		</el-card>
		<!-- 添加分类对话框 -->
		<el-dialog
			title="添加分类"
			:visible.sync="addCateDialogVisible"
			width="50%"
		>
			<el-form
				:model="addCate"
				:rules="addCateRules"
				ref="addCateRef"
				label-width="100px"
				@close="addCateDialogClosed"
				><el-form-item label="分类名称：" prop="cat_name"
					><el-input v-model="addCate.cat_name"></el-input
				></el-form-item>
				<el-form-item label="父级分类：">
					<el-cascader
						v-model="selectedKeys"
						:options="parentCateList"
						:props="{
							expandTrigger: 'hover',
							...cascaderProps,
							checkStrictly: true,
						}"
						@change="parentCateChanged"
						clearable
					></el-cascader>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button type="primary" @click="addCateFrom">确 定</el-button>
				<el-button @click="addCateDialogVisible = false">取 消</el-button>
			</span>
		</el-dialog>
		<!-- 编辑对话框 -->
		<el-dialog title="编辑" :visible.sync="editCateDiaLogVisible" width="50%">
			<el-form ref="editCateFormRef" :model="editCateForm" label-width="100px">
				<el-form-item label="分类名称">
					<el-input v-model="editCateForm.cat_name"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button type="primary" @click="editCateInfo">确 定</el-button>
				<el-button @click="editCateDiaLogVisible = false">取 消</el-button>
			</span>
		</el-dialog>
	</div>
</template>
<script>
export default {
	data() {
		return {
			queryInfo: {
				type: 3,
				pagenum: 1,
				pagesize: 5,
			},
			cateList: [],
			total: 0,
			columns: [
				{
					label: '分类名称',
					prop: 'cat_name',
				},
				{
					label: '是否有效',
					type: 'template',
					template: 'isOk',
				},
				{
					label: '排序',
					type: 'template',
					template: 'order',
				},
				{
					label: '操作',
					type: 'template',
					template: 'opt',
				},
			],
			addCateDialogVisible: false,
			addCate: {
				cat_id: 0,
				cat_name: '',
				cat_level: 0,
			},
			parentCateList: [],
			addCateRules: {
				cat_name: [
					{
						required: true,
						message: '请输入分类名称',
						trigger: 'blur',
					},
				],
			},
			cascaderProps: {
				value: 'cat_id',
				label: 'cat_name',
				children: 'children',
			},
			selectedKeys: [],
			editCateDiaLogVisible: false,
			editCateForm: {},
		}
	},
	created() {
		this.getCateList()
	},
	methods: {
		// 获取商品分类信息
		async getCateList() {
			const { data: res } = await this.$http.get('categories', {
				params: this.queryInfo,
			})
			if (res.meta.status != 200) {
				return this.$message.error('获取商品分类信息失败')
			}
			this.cateList = res.data.result
			this.total = res.data.total
		},
		handleSizeChange(newSize) {
			this.queryInfo.pagesize = newSize
			this.getCateList()
		},
		handleCurrentChange(newPage) {
			this.queryInfo.pagenum = newPage
			this.getCateList()
		},
		showAddCateDiaLog() {
			this.getParentCateList()
			this.addCateDialogVisible = true
		},
		// 获取父级分类的列表
		async getParentCateList() {
			const { data: res } = await this.$http.get('categories', {
				parpams: { type: 2 },
			})
			if (res.meta.status != 200) {
				return this.$message.error('获取父级分类失败')
			}
			this.parentCateList = res.data
		},
		// 添加分类
		parentCateChanged() {
			if (this.selectedKeys.length > 0) {
				this.addCate.cat_pid = this.selectedKeys[this.selectedKeys.length - 1]
				this.addCate.cat_level = this.selectedKeys.length
				return
			} else {
				this.addCate.cat_pid = 0
				this.addCate.cat_level = 0
			}
		},
		addCateFrom() {
			this.$refs.addCateRef.validate(async (valid) => {
				if (!valid) return
				const { data: res } = await this.$http.post('categories', this.addCate)
				if (res.meta.status != 201) {
					return this.$message.error('添加分类失败')
				}
				this.getCateList()
				this.addCateDialogVisible = false
				this.$message.success('添加分类成功')
			})
		},
		addCateDialogClosed() {
			this.$refs.addCateRules.resetFields()
			this.selectedKeys = []
			this.addCate.cat_pid = 0
			this.addCate.cat_level = 0
		},
		// 点击编辑按钮获取分类信息
		async showClassification(id) {
			const { data: res } = await this.$http.get('categories/' + id)
			if (res.meta.status != 200) {
				return this.$message.error('获取信息失败')
			}
			this.editCateForm = res.data
			this.editCateDiaLogVisible = true
		},
		editCateInfo() {
			this.$refs.editCateFormRef.validate(async (valid) => {
				if (!valid) return
				const { data: res } = await this.$http.put(
					'categories/' + this.editCateForm.cat_id,
					{
						cat_name: this.editCateForm.cat_name,
					}
				)
				if (res.meta.status != 200) {
					return this.$message.error('修改失败')
				}
				this.editCateDiaLogVisible = false
				this.getCateList()
				this.$message.success('修改成功')
			})
		},
		// 删除
		async removeCateById(id) {
			const confirmResult = await this.$confirm(
				'此操作将永久删除该分类, 是否继续?',
				'提示',
				{
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning',
				}
			).catch((err) => err)
			if (confirmResult != 'confirm') {
				return this.$message.info('已取消删除')
			}
			const { data: res } = await this.$http.delete('categories/' + id)
			if (res.meta.status != 200) {
				return this.$message.error('删除分类失败')
			}
			this.getCateList()
			this.$message.success('删除分类成功')
		},
	},
}
</script>
<style lang="less" scoped>
.treeTable {
	margin-top: 15px;
}
.el-cascader {
	width: 100%;
}
</style>
